<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品参数</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片试图 -->
    <el-card>
      <el-alert title="注意:只允许为第三级分类设置相关参数！" type="warning" show-icon :closable="false">
      </el-alert>
      <el-row class="cat_opt">
        <el-col><span>选择商品分类：</span>
          <el-cascader v-model="selectedCateKeys" :options="catelist" :props="cascaderProps" @change="handleChange" clearable></el-cascader>
        </el-col>
      </el-row>
      <!-- 动态参数表格 -->
      <el-tabs v-model="activeName" @tab-click="handleClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加参数</el-button>
          <el-table :data="manyTableData" border stripe>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,index) in scope.row.attr_vals" :key="index" closable @close="handleClose(index,scope.row)">{{item}}</el-tag>
                <el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue" ref="saveTagInput" size="small" @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)">
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column label="#" type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" size="mini" @click="showEditDialog(scope.row.attr_id)">修改</el-button>
                <el-button type="danger" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <!--静态表格-->
        <el-tab-pane label="静态属性" name="only">
          <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加属性</el-button>
          <el-table :data="onlyTableDate" border stripe>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,index) in scope.row.attr_vals" :key="index" closable @close="handleClose(index,scope.row)">{{item}}</el-tag>
                <el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue" ref="saveTagInput" size="small" @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)">
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column label="#" type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" size="mini" @click="showEditDialog(scope.row.attr_id)">修改</el-button>
                <el-button type="warning" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>>
    <!-- 添加对话框 -->
    <el-dialog :title="'添加'+titleText" :visible.sync="addDialogVisible" width="30%" @close="addDialogClosed">
      <el-form :model="addForm" ref="addFormRef" label-width="100px" class="demo-ruleForm">
        <el-form-item :label="titleText">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改对话框 -->
    <el-dialog :title="'修改'+titleText" :visible.sync="editDialogVisible" width="30%" @close="editDialogClosed">
      <el-form :model="editForm" ref="editFormRef" label-width="100px" class="demo-ruleForm">
        <el-form-item :label="titleText">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      catelist: [],
      // 级联表配置
      cascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover'
      },
      // 级联框双向绑定
      selectedCateKeys: [],
      activeName: 'many',
      // 动态
      manyTableData: [],
      // 静态数据
      onlyTableDate: [],
      addDialogVisible: false,
      addForm: {
        attr_name: ''
      },
      editDialogVisible: false,
      editForm: {
        attr_name: '',
        attr_id: 0
      },
      inputVisible: false,
      inputValue: ''
    }
  },
  created () {
    this.getCateLsit()
  },
  methods: {
    // 请求商品分类列表
    async getCateLsit () {
      const { data: res } = await this.$http.get('categories')
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('请求失败')
      }
      this.catelist = res.data
    },
    // 选中商品分类列表
    handleChange () {
      // console.log(this.selectedCateKeys)
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = []
        this.manyTableData = []
        this.onlyTableDate = []
        return
      }
      this.getParamsData()
    },
    handleClick () {
      this.getParamsData()
      // console.log(this.activeName)
    },
    // 获取参数
    async getParamsData () {
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: this.activeName } })
      if (res.meta.status !== 200) {
        return this.$message.error('请求失败')
      }

      res.data.forEach(item => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
        // 控制文本框的显示与隐藏
        item.inputVisible = false
        item.inputValue = ''
      })
      console.log(res.data)
      if (this.activeName === 'many') {
        this.manyTableData = res.data
      } else {
        this.onlyTableDate = res.data
      }
    },
    addDialogClosed () {
      // this.addDialogVisible = false
      this.$refs.addFormRef.resetFields()
    },
    // 添加参数
    async addParams () {
      const { data: res } = await this.$http.post(`categories/${this.cateId}/attributes`, { attr_name: this.addForm.attr_name, attr_sel: this.activeName })
      // console.log(res)
      if (res.meta.status !== 201) {
        return this.$message.error('请求失败')
      }
      this.$message.success('添加成功')
      this.addDialogVisible = false
      this.getParamsData()
    },
    // 展示修改对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes/${id}`, { params: { attr_sel: this.activeName } })
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('请求失败')
      }
      // this.$message.success('添加成功')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 编辑
    async editParams () {
      const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`, { attr_name: this.editForm.attr_name, attr_sel: this.activeName })
      console.log(this.activeName)
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('请求失败')
      }
      this.$message.success('修改成功')
      this.getCateLsit()
      this.editDialogVisible = false
    },
    // 删除参数
    async removeParams (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该参数 , 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => {
        console.log(err)
      })
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消删除!')
      }
      const { data: res } = await this.$http.delete(`categories/${this.cateId}/attributes/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      console.log(res)
      this.$message.success('成功')
      // console.log(res)
      this.getParamsData()
    },
    // 添加分类的tag
    async handleInputConfirm (row) {
      if (row.inputValue.trim().length === 0) {
        row.inputValue = ''
        row.inputVisible = false
        return
      }
      row.attr_vals.push(row.inputValue.trim())
      row.inputValue = ''
      row.inputVisible = false
      this.saveAttrVals(row)
      // console.log(res)
      // this.getParamsData()
    },
    async saveAttrVals (row) {
      const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`, { attr_name: row.attr_name, attr_sel: row.attr_sel, attr_vals: row.attr_vals.join(' ') })
      if (res.meta.status !== 200) {
        return this.$message.error('修改失败')
      }
      console.log(res)
      this.$message.success('成功')
    },
    showInput (row) {
      row.inputVisible = true
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    handleClose (i, row) {
      row.attr_vals.splice(i, 1)
      this.saveAttrVals(row)
    }
  },
  computed: {
    // 按钮禁用
    isBtnDisabled () {
      if (this.selectedCateKeys.length !== 3) {
        return true
      } else return false
    },
    // 分类id
    cateId () {
      if (this.selectedCateKeys.length === 3) {
        return this.selectedCateKeys[2]
      } else return null
    },
    titleText () {
      return this.activeName === 'many' ? '动态参数' : '静态参数'
    }
  }
}
</script>

<style lang="less" scoped>
.cat_opt {
  margin: 15px;
}
.el-tag {
  margin: 10px;
}
.input-new-tag {
  width: 90px;
  margin-left: 10px;
  // vertical-align: bottom;
}
</style>
